Effect of Different Rate of Organic Fertilizer on Growth of Cucumber and Its Nutrients Uptake

Substrate cultivation experiment was carried out in greenhouse to study the effect of different rate of organic fertilizer combined with same level of chemical fertilizers on growth of cucumber and its nutrients uptake.All the fertilizers were applied once as base fertilizer,among which chicken manure was chosen as the organic fertilizer for study.The results showed that high rate of organic fertilizer,which rate were 50,100 kg/m~3 respectively,inhibited cucumber growth at early stage significantly,and therefore reduced their early stage yield.Nitrogen,phosphorus and potassium nutrients uptake by cucumber increased with higher fertilizers rate.Available nitrogen in the substrate of all treatments was very low and evident symptoms of nutrient absence in cucumber plants appeared to certain extent 74 days after cucumber transplanting.The study demonstrated that application of high amount of organic fertilizer once could not supply enough available nitrogen for vegetable long-term growth.